Water Meter - Pulse Logger - HELP!

Hi Everyone.

i need some help, with a task.
at the moment i’m trying to get data from my water meter.

and i can’t find a solution how to.
i have tried a proximate sensor, but it cant attach to the magnet / metal ring in the meter.

how can i solve this , with out installing extra water meter ?

i have attached pictures of my meter !




BR
/Mike